2123336655165 has 64 divisors (see below), whose sum is σ = 3717872421120. Its totient is φ = 1026253916160.

The previous prime is 2123336655133. The next prime is 2123336655169. The reversal of 2123336655165 is 5615566333212.

It is not a de Polignac number, because 2123336655165 - 2⁵ = 2123336655133 is a prime.

It is a super-3 number, since 3×2123336655165³ (a number of 38 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123336655169) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 122777259 + ... + 122794551.

It is an arithmetic number, because the mean of its divisors is an integer number (58091756580).

Almost surely, 2^{2123336655165} is an apocalyptic number.

It is an amenable number.

2123336655165 is a deficient number, since it is larger than the sum of its proper divisors (1594535765955).

2123336655165 is a wasteful number, since it uses less digits than its factorization.

2123336655165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19614.

The product of its digits is 2916000, while the sum is 48.

The spelling of 2123336655165 in words is "two trillion, one hundred twenty-three billion, three hundred thirty-six million, six hundred fifty-five thousand, one hundred sixty-five".